<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>
	<input type="text" list="haha">			<!-- 搭配list属性 -->
	<datalist id="haha">					<!-- 搭配id属性 -->
		<option value="html">HTML</option>
		<option value="css">CSS</option>
		<option value="javascript">JAVASCRIPT</option>
	</datalist>
</body>
</html>